org.apache.hadoop.hive.ql.exec.vector.expressions

Class ConstantVectorExpression

java.lang.Object

org.apache.hadoop.hive.ql.exec.vector.expressions.VectorExpression

org.apache.hadoop.hive.ql.exec.vector.expressions.ConstantVectorExpression

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

FilterConstantBooleanVectorExpression

public class ConstantVectorExpression
extends VectorExpression

Constant is represented as a vector with repeating values.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected long	longValue

Fields inherited from class org.apache.hadoop.hive.ql.exec.vector.expressions.VectorExpression

childExpressions, inputTypes, outputType

Constructor Summary

Constructors

Constructor and Description
ConstantVectorExpression()
ConstantVectorExpression(int outputColumn, byte[] value)
ConstantVectorExpression(int outputColumn, double value)
ConstantVectorExpression(int outputColumn, HiveChar value)
ConstantVectorExpression(int outputColumn, HiveDecimal value)
ConstantVectorExpression(int outputColumn, HiveVarchar value)
ConstantVectorExpression(int outputColumn, long value)
ConstantVectorExpression(int outputColumn, String typeString, boolean isNull)

Method Summary

Methods

Modifier and Type	Method and Description
void	evaluate(VectorizedRowBatch vrg) This is the primary method to implement expression logic.
byte[]	getBytesValue()
VectorExpressionDescriptor.Descriptor	getDescriptor()
double	getDoubleValue()
long	getLongValue()
int	getOutputColumn() Returns the index of the output column in the array of column vectors.
org.apache.hadoop.hive.ql.exec.vector.expressions.ConstantVectorExpression.Type	getType()
String	getTypeString()
void	setBytesValue(byte[] bytesValue)
void	setDecimalValue(HiveDecimal decimalValue)
void	setDoubleValue(double doubleValue)
void	setLongValue(long longValue)
void	setOutputColumn(int outputColumn)
void	setOutputType(String type) Set type of the output column.
void	setType(org.apache.hadoop.hive.ql.exec.vector.expressions.ConstantVectorExpression.Type type)
void	setTypeString(String typeString)

Methods inherited from class org.apache.hadoop.hive.ql.exec.vector.expressions.VectorExpression

evaluateChildren, getChildExpressions, getInputTypes, getOutputType, setChildExpressions, setInputTypes, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

longValue

protected long longValue

Constructor Detail

ConstantVectorExpression

public ConstantVectorExpression()

ConstantVectorExpression

public ConstantVectorExpression(int outputColumn,
                        long value)

ConstantVectorExpression

public ConstantVectorExpression(int outputColumn,
                        double value)

ConstantVectorExpression

public ConstantVectorExpression(int outputColumn,
                        byte[] value)

ConstantVectorExpression

public ConstantVectorExpression(int outputColumn,
                        HiveChar value)

ConstantVectorExpression

public ConstantVectorExpression(int outputColumn,
                        HiveVarchar value)

ConstantVectorExpression

public ConstantVectorExpression(int outputColumn,
                        HiveDecimal value)

ConstantVectorExpression

public ConstantVectorExpression(int outputColumn,
                        String typeString,
                        boolean isNull)

Method Detail

evaluate

public void evaluate(VectorizedRowBatch vrg)

Description copied from class: VectorExpression

This is the primary method to implement expression logic.

Specified by:

evaluate in class VectorExpression

getOutputColumn

public int getOutputColumn()

Description copied from class: VectorExpression

Returns the index of the output column in the array of column vectors. If not applicable, -1 is returned.

Specified by:

getOutputColumn in class VectorExpression

Returns:

Index of the output column

getLongValue

public long getLongValue()

setLongValue

public void setLongValue(long longValue)

getDoubleValue

public double getDoubleValue()

setDoubleValue

public void setDoubleValue(double doubleValue)

getBytesValue

public byte[] getBytesValue()

setBytesValue

public void setBytesValue(byte[] bytesValue)

setDecimalValue

public void setDecimalValue(HiveDecimal decimalValue)

getTypeString

public String getTypeString()

setTypeString

public void setTypeString(String typeString)

setOutputColumn

public void setOutputColumn(int outputColumn)

getType

public org.apache.hadoop.hive.ql.exec.vector.expressions.ConstantVectorExpression.Type getType()

setType

public void setType(org.apache.hadoop.hive.ql.exec.vector.expressions.ConstantVectorExpression.Type type)

setOutputType

public void setOutputType(String type)

Description copied from class: VectorExpression

Set type of the output column.

Overrides:

setOutputType in class VectorExpression

getDescriptor

public VectorExpressionDescriptor.Descriptor getDescriptor()

Specified by:

getDescriptor in class VectorExpression